Abstract

Derivatives of hydrazine and α-branched tertiary carboxylic acids of fractions C₁₀ and C₁₅–C₁₉: 1,2-diacylhydrazines C₁₀, hydrazides C₁₅ –C₁₉, N ′,N-dimethylhydrazides C₁₅–C₁₉, N ′,N ′-dimethylhydrazides C₁₀ and hydrazides C₁₀ in the form of 0.1–0.5 M solutions in kerosene were tested as extractants of lanthanide ions Y, La, Ce, Sm, Er, and Yb in acidic aqueous media. The best extraction properties were exhibited by hydrazide C₁₅–C₁₉. The conditions and the number of stages of the extraction (from solutions containing 0.5 M H₂SO₄) and stripping (stripping agent 5 M HCl) were determined using La³⁺ as an example, until the stripping was saturated (up to 43 g L^–1 La³⁺). The distribution constants (D) and separation (β) were calculated for the listed lanthanides.

中文翻译：

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α-支化叔羧酸酰肼作为硫酸盐介质中稀土金属离子的萃取剂

摘要

肼和馏分 C ₁₀和 C ₁₅ –C _{19 的}α-支化叔羧酸的衍生物：1,2-二酰基肼 C ₁₀、酰肼 C ₁₅ –C ₁₉、N  '、N-二甲基酰肼C ₁₅ –C ₁₉、N  ' , N  '-二甲基酰肼C ₁₀和酰肼 C ₁₀以 0.1-0.5 M 煤油溶液形式作为镧系元素离子 Y、La、Ce、Sm、Er 和 Yb 在酸性水介质中的萃取剂进行了测试。酰肼 C ₁₅ –C ₁₉表现出最好的萃取性能. 以 La ³⁺为例，确定萃取（从含有 0.5 MH ₂ SO _{4 的}溶液中）和汽提（汽提剂 5 M HCl）的条件和级数，直至汽提饱和（高达 43 g L ^–1 La ³⁺ )。计算列出的镧系元素的分布常数 ( D ) 和分离度 (β)。